A photograph from the Aryan Nations Australia website. It has since been removed.

A Forrestfield resident who didn't want to be named for fear of reprisal, said he was alarmed with a pamphlet arrived is his letterbox on Sunday morning with "Say No to Islamization" emblazoned across it.

The person immediately called the police, then WAtoday, who broke the original story.

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"I think people need to be informed," the concerned resident said.

The newsletter, which appeared to be the first issue released by the group, claims the cost of living for Australians was "excessively rising" because "we" are paying for the average cost of goods and services to "support inhumane Halal slaughter", the flyer read.

Robert Edhouse, from the group, previously told WAtoday his members were worried about Islam immigration.

"It's becoming a problem and we want Australia to stay Australia and we want people to follow Australian law not Sharia Law.

"We are not against all immigration... I'm sitting next to someone now who is Polish."

The group's website featured members performing a Nazi salute and flying banners, bearing the message "white lives matter", which has since been removed.